Synthesized Ltd raises £16.6m for AI-native test data platform

London-based Synthesized Ltd has raised an estimated £16.6m in a pre-seed funding round. The company, which was incorporated in 2017, provides an AI-powered platform for synthetic data generation and test data automation. This technology allows organizations to train and validate machine learning models using datasets that replicate the characteristics of real-world data without compromising individual privacy.

The platform targets enterprise development and quality assurance teams, particularly within regulated sectors such as financial services. Synthesized addresses the operational friction and compliance risks associated with traditional QA methods by automating the lifecycle of test data. Its software includes capabilities for data masking, database subsetting, and automated test data provisioning. The company also provides native support for SAP and non-SAP test data environments.

Financial records for the year ended 31 January 2025 show the company employed 14 people, although current LinkedIn data suggests a total headcount of 53. Synthesized lists global financial institutions including Deutsche Bank and UBS, as well as the European Commission, among its existing user base. The platform integrates with various database and cloud services such as Snowflake, Oracle, SQL Server, and Salesforce.

The recent funding follows the appointment of Marc Alexander Moesser as a director in May 2025. Documentation for the £16.6m round was filed in March (with an allotment date of June 2025). This capital injection is classified as a pre-seed round. Synthesized focuses on providing continuous data availability for test automation and agentic AI workflows, aiming to reduce testing cycle times and operational costs for its clients.